Enron said:
My SR225s developed a small crack in the housing (lol Grado build quality) and were getting NO love since i bought the beyers so I sold em on head-fi about a year and a half back. I still have my beyers.
Ah, then here is my tip: go with whatever you feel like but don't sell the Beyers. Even if they lie around collecting dust.
You probably simply get bored with sound signatures and it's great to have the option to switch around, even if the current taste says no way. Unless they are really sonically inferior in every way, and even then. Even a HD-800 can be boring at times.
The 701 can be gotten at a really good price at the moment, at least in Europe. Burn them in, give them a spin, I liked them a lot, just lack the money at the moment. Listening to them next to a Senn, they are so wildly different.
I for myself have 2 headphones, 2 buds and a stereo setup. I know what I like and what I miss in each of them.
Buds: AKG 319 - clean, crisp, trasnparent, great for J-Synthie, but not so great bass. Senns 880- Great overall tonality, add that Sennheiser flavour, nice bass for buds
Headphones: M50 - nice bodied bass, good soundstage, high resolution treble but that "fizzy" signature that really fatigues me. AKG K-240 sextett (30 years old): the drivers are probably growing really old because the sound isn't tight. But the mids are nice. Bass lacks control and everything which is a shame. Overall nice for acoustics, especially since they highs are way uncritical. Even the Nintendo-DS is bearable on them.
Speakers: Quadral Rondo C - since they are bookshelves, what they lack is bass and body. But the rest is pretty much awesome and that ribbon tweeter is the way I'd like my treble to sound in a headphone. So perfectly neutral and without any kind of fizz or hiss, just pure. Also, very lively speakers.
So I can never grow bored with my sonics, I can wildly switch around. If I only had money I'd like to go really high end on headphones and also try fullsize speakers of like quality but no way the 3k I'd have to fork over :-\